.btn-file {
  padding: 7px 15px;
  position: relative;
  overflow: hidden;  
}

.btn-file input[type=file] {
  position: absolute;
  top: 0;
  right: 0;

  font-size: 100px;
  text-align: right;
  filter: alpha(opacity=0);
  opacity: 0;
  background: red;
  cursor: inherit;
  display: block;
}
.btn-file i{
	margin:0;
}
.file-img {
	width:100%;
	min-width:80px;
	height:auto;
}
.file-img img{
	width:80px;
	height:auto;
	margin:0;
	padding:0;
}